H. A. Guerber, Myths of northern lands (1895)
“ Skadi’s anger against the gods, who had slain her father, the storm giant, is an emblem of the unbending rigidity of the ice-enveloped earth, which, softened at last by the frolicsome play of Loki (the heat lightning) , smiles, and permits the embrace of Niörd (summer) . His love, however, cannot hold her for more than three months of the year (typified in the myth by nights) , as she is always secretly longing for the wintry storms and her wonted mountain amusements. ”
